6-(ALPHA-FLUOROALKYL)-4-PYRIMIDONES AND PROCESS FOR PRODUCING THE SAME
申请人:UBE INDUSTRIES LIMITED
公开号:EP1065202A1
公开(公告)日:2001-01-03
The present invention is to provide a novel 6-(α-fluoroalkyl)-4-pyrimidone represented by the following formula (1):
wherein R1 represents an alkyl group; R2 represents a hydrogen atom or an alkyl group; and R3 represents a hydrogen atom, an alkyl group or a chlorine atom,
which is important for a synthetic intermediate for amino-pyrimidine derivatives which are useful as acaricides, fungicides or nematocides,
and processes for producing the same.
4-FLUORO-3-OXOCARBOXYLIC ESTERS AND PROCESS FOR PRODUCING THE SAME
申请人:UBE INDUSTRIES LIMITED
公开号:EP1038861A1
公开(公告)日:2000-09-27
The present invention is to provide 4-fluoro-3-oxocarboxylates represented by the following formula (1):
wherein R1 represents an alkyl group or an aryl group;
R2 and R3 each represent a hydrogen atom or an alkyl group;
and R4 represents an alkyl group, and a process for preparing a 4-fluoro-3-oxocarboxylate represented by the above formula (1), which comprises allowing a 2-fluorocarboxylate represented by the following formula (2):
wherein R1 and R2 have the same meanings as defined above;
and R5 represents an alkyl group,
to react with a carboxylate represented by the following formula (3):
wherein R3 and R4 have the same meanings as defined above, in the presence of a base.
4-fluoro-3-oxocarboxylic esters and process for producing the same
申请人:UBE Industries, Ltd.
公开号:US06593488B1
公开(公告)日:2003-07-15
The present invention is to provide 4-fluoro-3-oxocarboxylates represented by the following formula (1):
wherein R1 represents an alkyl group or an aryl group;
R2 and R3 each represent a hydrogen atom or an alkyl group;
and R4 represents an alkyl group, and a process for preparing a 4-fluoro-3-oxocarboxylate represented by the above formula (1), which comprises allowing a 2-fluorocarboxylate represented by the following formula (2):
wherein R1 and R2 have the same meanings as defined above;
and R5 represents an alkyl group, to react with a carboxylate represented by the following formula (3):
wherein R3 and R4 have the same meanings as defined above, in the presence of a base.